John Cage and Raashan Roland Kirk - Sound?? (1966)

Although Rahsaan Roland Kirk and John Cage never actually meet in this film (Cage's enigmatic questions about sound are intercut with some of Kirk's more ambitious experiments with it) these two very different musical iconoclasts share a similar vision of the boundless possibilities of music. Kirk plays three saxes at once, switches to flute, incorporates tapes of birds played backwards, and finally hands out whistles to his audience and encourages them to accompany him, "in the key of W, if you please." -- Martin Williams, JAZZ TIMES